After finally allowing the pair to meet in the last issue, Supergirl #20 introduces Power Girl to Supergirl‘s little piece of Krypton on Earth – her hidden underwater Kryptonian Fortress of Solitude known as Sanctuary. There isn’t much time for small talk however when the sentience of Sanctuary throws a shit-fit at seeing two versions of Kara and tries its best to kill the one it believes is a clone.
For an issue about an out of control computer intelligence trying to kill two young women, Supergirl #20 is a hell of a lot of fun. We get a fun moment with Supergirl calling Power Girl on her choice of a new costume as well as the growing frustration of each woman when one and then the other is targeted for extinction.
Writer Michael Allen Johnson does a great job in showcasing both similarities and differences between the Karas of different Earths while providing a thrilling and amusing issue full of stark humor and life and death stakes that costs Supergirl something precious but introduces someone even more valuable into her life. Worth a look.